Welcome to HVAC-Talk.com, a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional! Here you can join over 150,000 HVAC Professionals & enthusiasts from around the world discussing all things related to HVAC/R. You are currently viewing as a NON-REGISTERED guest which gives you limited access to view discussions

To gain full access to our forums you must register; for a free account. As a registered Guest you will be able to:

Participate in over 40 different forums and search/browse from nearly 3 million posts.

Your contractors should do one to know hwat size your home needs instead of guessing and using rules of thumb.
Shhould be included in the cost of the system change out.
A load done by an outside party will have a cost directly related to how difficult it is to do it for your house.

Screen contractors over the phone. If they don't do load calcs, do have them out.

Your contractors should do one to know hwat size your home needs instead of guessing and using rules of thumb.
Shhould be included in the cost of the system change out.
A load done by an outside party will have a cost directly related to how difficult it is to do it for your house.

Screen contractors over the phone. If they don't do load calcs, do have them out.

Varies by the house a little but not much.
Usually takes me 45 minutes to an hour to measure and draw out the house.

But an outside party is charging for a service that they are only performing once for that home.
They would also be liable for the equipment sizing if it was wrong. And have to pay for replacement with the right size if they are wrong. So a third party may take more time double checking their measurements and insulation estimates.
Along with possibly doing a blower door test.

I don't do blower door test, do you.
And how quick do you do your load calcs.

Varies by the house a little but not much.
Usually takes me 45 minutes to an hour to measure and draw out the house.

But an outside party is charging for a service that they are only performing once for that home.
They would also be liable for the equipment sizing if it was wrong. And have to pay for replacement with the right size if they are wrong. So a third party may take more time double checking their measurements and insulation estimates.
Along with possibly doing a blower door test.

I don't do blower door test, do you.
And how quick do you do your load calcs.